Friction-clutch.



Pl MI E- FBIGTION CLUTCH. APPLICATION FILED 1 130.26, 1907f 900,397.Patented Oct. 6, 1908.

3 SHEETS-SHEET 1.

W/fnzss'es. [nvenfor- P.'M. H. LANGE. FRICTION CLUTCH. APPLICATIONFILEDDBO. 26, 1907.

900,397. Patented Oct. 6, 1908.

3 SHEETS-SHEET 2.

P. M. H. LANGE. FRICTION CLUTCH. APPLICATION FILED p20. 26, 19o7.

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Patented Oct. 6, 1908.

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UNITED sTATEs PATENT OFFICE.

PAUL M. H. LANGE, F TOLEDO, OHIO, ASSIGNORTO THE TOLEDO MACHINE AND TOOLCOMPANY, or TOLEDO, OHIO. I

rmc'rion-onn'rcn.

a citizen of Germany, residing at Toledo, in the county of Lucas andState of Ohio, have invented a new: and useful Friction-Clutches, ofwhich the following is a Improvement in specification. I

adapted to I M invention relates 1 and reliable device of the to afriction clutch, and as for its object to provide an eflicient kind thatis adapted to frictionally revolve a pinion, gear wheel, or pulley,loosely'mountedon a shaft, with the shaft. I A further bbject is toprovide a convenient and safe device of the kind and for the urpose,havin large areas of (apposed s aces be subjected to irectly op 'osedpressure, and that is adjustable to ta as up .the Wear of the surfaces.

A further object is to provide a friction clutch that isadapted toengage movingwith n'on-movingp'arts, and transmit the motion 1 of theone to the other without shock.

' 6, there is fixedly mounted on the shaftd by- A further ob'ect is toprovide a device of the kind, whic when enga pressure from the sleeve anlever by which the frictional parts are thrown into engagement andcompressed together. I

I accomplish these objects by the construction and combination of-partsas hereinafter described and illustrated in the drawings, in

which Figure 1 is a view in longitudinal section of a friction clutchconstructed. in accordance with my invention, showing the parts inreleased position. Fig. 2 is a similar .view showing the parts infrictionally engaged position. Fi 3 is an end view of the rictioncylinder with one-half the annular friction ring. line d:-m. Fig. 5 is abroken away portion of the eriphery of the friction disk.

' In t e drawings ldesi'gnates a shaft, upon which is loosely mounted apinion 2, forming a hub for the end disk 3, of suitable diameter, andprovided with the cylindrical flan e 4, to the outer end of which isattached y the bolts 5, the annular plate 6, the whole ing a casin 7around and concentric to the shaft 1. ithin the cylindrical casing 7,and between the disk 3 and the annular end-plate the hub 8, the frictiondisk 9, of less diameter than the disk 3, and having the radial ribs 10,

and the friction segments 12 securedbet-ween Specification of LettersPatent. Application filed December 26, 1907,. Serial No. 408,210.

ed releases the Fig. 4 is a cross section of Fig. 3 on formintervalsaround the periphery of the mug 13,

Patented Oct. e, 1908.

is provided cross incuts to receive the guide pins 14 projectingradially inward from the cylindrical flange4, and havin the projectingportions squared to enter t e incuts and permit lateral movement of thering in the casing. The ring 13 is-provided at regular intervals of itsouter side with projecting bifurcated. lugs 14', having alinedbores toreceive the pins 15 upon which are pivotallymounted the bell cranks 16,.the longer-arms 17 of which extend inward towardsthe shaft 1, and theshorter arms 18 extend outward towards the annular end plate 6. Theouter rovided with the rollers 19, and opposite t e bifurcated lugs endsof the arms-18 are 14 the annular end plate 6 of the casing-1s providedwith the sockets 20 in which are mounted the, plu s 21, having theirinner ends hardened an formed slightly cam faced for'enga ement by therollers of the arms 18,

- of the be 1 cranks, and opposite the plu s the annular plate 6 isprovided with the. a justing screws 22 by which the lugs 21 are adjustedinwardly. In order t at the heads of the screws 22 may notform dangerousprojections from the casing, they are preferably recessed in sockets 6formed in the end plate.

On the shaft 1 is open end of the'casing, a grooved sleeve 23 .which' atthe endnext the casing isprovided with the incuts 24 within which arepivotally mounted by the pins 25 the outer ends of links 26, which attheir pivotally connected by the pins 27 to the biurcated lower ends ofthe bell crank arms 17. Adjacent to the outer end of the sleeve 23 thereis mounted and fixed on the shaft by a set screw 28 a stop collar 29. Tothe mounted, adjacent to the opposite ends are groove of the sleeve isattached in the customary manner a lever (not shown) which is fulcr'umedto move the sleeve back and forth along the shaft 1'.

The friction disk 9 is located in near proximity to the end-disk 3 ofthecasing with the friction segments'l2'of one side between the twodisks and requirin only sli ht movement of the casing lengt Wise of t eshaft to' bring the segments and'the end disk 3i to frictional contact.The friction ring 13 is located inthe casing in near proximity to thefriction segments 12 f the other side of the disk 9 and requiring onlyslight movement of the ring 13' to bring it into frictional engagementwith the outer friction segments 12 or to release it therefrom. Thelonger arms 17 of the bell cranks are provided near their pivotalconnection to the friction ring 13 with the stop lugs 30, which when thearms 27 are slightly over their pivotal centers, engage the outer faceof the ring 13. and limit further throw of the arms inward. Between thedisk 3' and the ring 13, at re ular intervals around 15 the periphery ofthe disk 9, in suitable shallow socket bores 31, formed oppositelyin-the disk and the ring, are insert-ad the helical springs-B2, whichare adapted normally to hold the disk 3 and the ring slightly out ofenga einent with the-friction segments 12 of, the isk 9. The sprin s 32yield to the pressure of the bell or 11 s, but when the pressure isreleased the springsoperate to separate the disk 3' and the 131mm con- 5tact with the se merits, so that when released there is no iction orwear of the parts.

Thus constructed,- when the parts are in position as shown i'nFig. =1,'tl e friction segments '12 are slightly separated by the #msprings 32from the disk 3 of the casing and t e ring 13. By throwing the sleeve23inward towards the casing, the arms 27 of the bell cranks are movedinward by the links 26 until the lugs-30 of the arms are enga ed with I5 the plate 13, as shown in Fig Z, in w ich position the rollers ef thearms 18 of the bell cranks are moved over'the cam faces of the plugs 21,whereb' the disk 30f, the casing is drawn towards t e disk 9 and the rim13 is 40' pushedin the opposite direction unti both are pressed againstthe friction segments 12, I

I the toggle like action of the arms .18 and the plugs 21 producingstrong pressure in directly opposed directions on the se ment's '12 ofboth sides of. the disk 9, whic are thereby 1 clam d as ina vise,and thefriction produce rotates the casing and sleeve'with the disk 9 therebyrevolving the pinion 2 with the shaft; The arms 17 of the bell cranks sobeing over their pivotal centers, the'pressureproducedby the arms" 18 indirect almement with the plugs .21 and their pivotal centers, tends tomove the arms 17 towards the ring 13 and to prevent any-back pressure onthe sleeve an when the partsare in position as shown in Fig. 2, thereis. no pure or strain on the sleeve'and the lever,'and the tendency ofthe pressure created is to hold'the parts in fric: 6o tional engagement.

B my construction the friction'may be 1 gradiially increased bythe leveruntil it has oyercome the inertia of the casing and its connections,after whichthe lever me he as further inovedtoforcei the armsl? o "the"ally connected to the annular ring an havthe operating lever, whereby,

bell cranks past their centers into running position, without producingany sudden shock or strain en the parts. i

The friction segments 12 may be formed of, Wood, fiber, leather, metalor other suitable material, and secured to the disk 9 by soft metalrivets 33 having countersunk heads as' shown in Fig. 5, and as thesurfaces of the contactin parts are worn, the wear maybe taken up by thescrews 22 until such time as the wear requires the substitutio frictionsegments 12. g

While my clutch is shown foreperaiing a' gear, it is manifestthat thefriction disk 3' and its flange 4 may be formed. integral with go orattached to a pulley or the like, without departing from the principleof construction andopcration of my invention. I therefore do not limitmyself to its application to gears.

What I claim to be new is, 35 1. In a friction clutch, in combinationwith a shaft, a friction disk, fixedly mounted on the shaft, a drivingwheel loosel mounted on the shaft beside the friction dis and providedwith a cylindrical casing concentric around the friction disk, saidcasing having an inner end adapted to frictionally engage one side ofthe friction disk, anannular ring concentric within the casin betweenthe '15 4 new friction disk and the outer an of the casing, 9t

and movable to engage and disengage the friction disk, an annular endplate secured to the outer end of the casing having cam pro: jections onits inner face, and nieans to press the end of the casing and theannular ring op- 10o positelyagainst the friction disk, comprising asleeve on the shaft adapted to move long? tudinally of the shaft,andbell cranks .ivoting arms connected to the sleeve and arms adapted toengage and disengage the cam pro ections of'the annular end plate, substantially as set forth.

2. In a friction clutch, in combination with a shaft, a friction disk,fixedly mounted on the shaft, 2: driving vJheel-locsol mounted ontheshaft beside the friction dis and prolot ,vided with a cylindricalcasing concentric around the friction disk, said casing having an innerend adapted to frietionally engage 110 one side of the friction disk,arr-annular ring concentric within the casin between the friction diskand the outer on of the casing, and movable to engageand disengage thefriction disk, an annular end plate secured to the outerend of thecasing having cam pro-'- jections on its inner face, sprin' between: theinner end of the casing'and t e annular rin adapted to" ieldingly holdthe casing en and the army lar ring disengaged from the friction disk,and means to press the end of'the casing and the annular ring oppositelyagainst the friction'disk, comprising a sleeve on the shaft ads ted tomove longitudinally of the shaft, am bell cranks pivotally con- 180nected to the annular ring and having arms connected to the sleeve andarms adapted to engage and disengage the cam projections of the annularend plate, substantially as set forth. v 3. A friction clutch comprisina shaft, a cylindrical casing having an en disk provided with a hub,adapted to be loosely mounted on the shaft, a hubbed friction disk, adated to be fixedly mounted on the shaft, wit in and concentric to thecasing, a friction ring, movableas a piston moves, within the flange,having its inner face adapted to engage the friction disk, and its,

outer face provided with lugs, an annular end plate secured to the openend of -the cas ing, and having'cam rejections opposite the lugs of thering, belFcranks pivoted to the lugs of the friction ring, having longarms extending towards the shaft, and having stop lugs adapted to limitthe inward movement of the arms, and short arms having end rollersadapted toengage the cam projections of the annular end plate, and meansmounted on the shaft and connected. to the long arms of the bell cranks,ada ted to be moved lon itiidinally of the shaft and thereby move t eshort arms of the bell crank to and from engagement with the camprojections of the end plate, substantially as set forth.

4. A friction clutch comprising a shaft, a cylindrical casing having anend disk pr'0- vided with a hub, adapted to be loosely mounted on theshaft, a hubbed friction disk, adapted to be fixedly mounted on theshaft, within and concentric to the casing, a friction ring, movable asa piston moves, Within the flange, having its inner face adapted to engae the friction disk, and its outer face provi ed with lugs, an annularend plate secured to the open end of the casing, and hav 'by move theshort arms of the bell cranks to and from engagement with the plugs ofthe end plates, substantially as setforth.

In witness whereof, I have hereunto signed my name in the resence of twosubscribing witnesses, this 4t day of December, 1907.

PAUL M. H. LANGE.

In presence of- FRED H.'KRUSE, M. S. SMITH,

